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This makes it so that we attempt evaluation + rewriting on applications of operators that do not always evaluate, and return constants in case the evaluation was successful.
This fixes warnings for check-models on 43 of our regressions, and also uncovered one regression where our model was wrong but check-models silently succeeded. I've opened CVC4/cvc4-projects#276 for fixing the latter.
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This updates the preprocessor so that expand definitions does not expand theory symbols at the beginning of preprocessing.
This also restores the previous expandDefinitions method in arithmetic, which is required for correctly interpreting division by zero in models, but should not be applied at the beginning of preprocessing. Moreover it ensures that only partial operators are eliminated in arithmetic expandDefinitions, which required an additional argument partialOnly to arith::OperatorElim.
This adds -q to suppress warnings for many quantified regressions which now emit warnings with --check-model. This will be addressed later as part of CVC4/cvc4-wishues#43.
The purpose of this PR is two-fold:
(1) Currently our responses to get-value are incorrect for partial operators like div, mod, seq.nth since partial operators can be left unevaluated.
(2) The preprocessor should have the opportunity to rewrite and eliminate extended operators before they are expanded. This is required for addressing performance issues for non-linear arithmetic. It is also required for ensuring that trigger selection can be done properly for datatype selectors (to be addressed on a later PR).
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This commit converts all v2.5 smt2 regressions to v2.6 (except for regress/regress0/lang_opts_2_5.smt2).
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sygus), update regressions.
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ALL_SUPPORTED/QF_ALL_SUPPORTED
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